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(No Model.)

W. AVSPIO ER. Check Draft Damper for Stoves and Ranges No. 230,832.Patented Aug. 3,1880.

INVENTORI WITN ESSESi ww MW UNITED STATES PATENT ()EETQE.

\VILLIAM A. SPIOER, GI PROVIDENCE, RHODE ISLAND, ASSIGNOR TO SPIGERS &PEOKHAM, OF SAME PLACE.

CHECK-DRAFT DAMPER FOR STOVES AND RANGES.

SPECIFICATION forming part of Letters Patent No. 230,832, dated August3, 1880.

Application filed May 31, 1880. (No model.)

To all whom it may concern Be it known that I, VVILLIAM A. SPIcEE, ofthe city and county of Providence, and State of Rhode Island, haveinvented a new and useful Improvement in Check-Draft Dampers for Stovesand Ranges; and I hereby declare that the following is a full, clear,and exact description of the same reference being had to theaccompanying drawings, forming part of this specification.

This invention has reference to an improvement in the construction ofthe collars connectin g the fines of stoves and ranges with the pipe bywhich the products of combustion are carried to the chimney.

Theobject of the invention is to simplify the construction of the collarand provide the same with a damper or adjustable air-inlet.

The invention consists in the peculiar construction of thecollarprovided with inlet-openings, and of a sliding plate, one end ofwhich is provided with a thumb-piece and the other with a deflector,which, when the damper is closed, forms part of the collar.

Figure 1 is a top viewof a part of a stove or range provided withmyimproved collar and draft-regulator. Fig. 2 is a sectional view of thetop plate of a stove or range, the draftregulator, the collar, and theslide.

In the drawings, A represents apart of the top plate of a stove orrange. B is the line through which the products of combustion aredischarged. (J represents the collar by which the stove-pipe D isconnected with the stove or range.

0 represents a flat side provided with the thumb-piecef. It is shown inFig.1,in broken lines, as drawn out so as to close the air-inlets andopen wide the draft-flue B, and in both figures, in solid lines, intheposition when the air-inlets are open and the draft-flue is partlyclosed. The damper 6 therefore performs two functions. When theair-inlets are opened by sliding the damper e inward the draft-flue iscontracted, and the draft is thus diminished by the admission of theairand by the contraction of the draft-flue. When, now, the damper eisdrawn out the draftflue is opened the full area and the air-inlet isclosed.

9 is the collar uniting the stove-pipe D with the flue B, and g g arethe air-inlet openings. Such collars are usually secured to the stove orrange by placing the same over a projecting rim surrounding thefine-outletin the plate. I prefer to secure the same more firmly, andprovide a portion of the collar, preferably the portion between theair-inlet openings, with the hooked end h, which is entered into a holein the stove-plate, and then secure the other end by means of the bolt1', so that the collar is now firmly secured to the plate A.

The damper e is provided with the slit 7c, the end h is passed throughthe slit, and thus the damper is secured and a central guide is providedby which the liability of \vedging the sliding damper is prevented and aregular smooth movement is secured. This feature is important in astove, as dampers have to be frequently moved. When the cook is in ahurry and not often blessed with patience, adamper that will stick orbind will meet with rough usage and frequently with utter destruction.

Z l are theinclined segmental portions of the damper e, which enter theopenings g g. When the air-inlet is to be closed, as these parts 1 Z arevertical and preferably inclined like the sides of the collar, they formdeflectors, by which the inrushing air is directed upward to check thedraft.

By this arrangement great economy in construction is secured oversimilar dampers as heretofore constructed, in which an extra airbox hadto be connected with the flue, into which air was admitted when thedamper closed the flue or contracted the area of the same, While in myimproved device the air is admitted through the sides of the collar whenthe damper is pushed inward, and no box or other device is required. Thewhole is simply secured to the top of a plain plate, as shown, and theair is directed at once into the stovepipe, quickly checking the draftand flowing in above the contracted flue, and not, as has been the caseheretofore, below the contraction of the flue, being cheaper, better,and more effective.

This attachment can be secured to the back of the stove or range, whendesired, without tions Z Z, arranged to regulate the air-inlet and theflue-opening, as described.

3. The combination, with the plate A, the flue B, and collar 0, providedwith openings, of the sliding damper 0, provided with the slit k,constructed to control the draft by increasing or decreasing the area ofthe flue and open- 20 ing or closing the air-inlet, as described.

WILLIABI A. SPIOER.

W itnesses:

JOSEPH A. MILLER, JOSEPH A. MILLER, J r.

